| Primary Identifier | MGI:5544724 | Allele Type | Targeted |
| Attribute String | Null/knockout, Reporter | Gene | Gbx1 |
| Transmission | Germline | Strain of Origin | 129P2/OlaHsd-Hprt1<b-m3> |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A 313 bp region in exon 2 encompassing the entire homeodomain was replaced with a lacZ-neo cassette via homologous recombination. Immunohistochemical analysis confirmed the absence of detectable protein in the spinal cords of homozygous mice at E18.5. |